Brushing your teeth is an essential since people recognize your stinky breath and yellow teeth. You can fix that by simply spending like 2 minutes brushing your teeth every night. If you can spend 7 hours playing Fortnite and Minecraft then you can spend 2 minutes on simply brushing your teeth. It's essential to brush and floss at night since the plague and sugar from all those Mountain Dews your drinking can rot your teeth and give them cavities! and you don't wanna spend 3 hours to get a root canal do ya?
Showering cleans the skin and removes dead skin cells to help clear the pores and allow the skin cells to function. It washes away bacteria and other irritants that could cause rashes and other skin problems. Some people in school don't want to take a shower, which is criminal since showers get rid of the musk all over your body and just generally makes you feel better about yourself.
Wearing deodorant helps reduce the sweating, sweat patches on clothes and the odor that comes with the built up sweat after a period of time. PLEASE,for the sake of yourself and those around you, you should use deodorant everyday. This keeps you smelling and feeling fresh, and it only takes like 5 seconds to put it on.
I get it, you can have a lot of wax build-up, but that doesn't excuse you having so much wax in your ears. Cleaning your ears can help improve your hearing so you don't have to keep going "huh?" when someone tells you something, and it can prevent infections. It can even potentially give you hearing loss if it gets bad.
This isn't too essential, but it's important if you want to make yourself feel better. Getting a healthy diet can prevent illnesses like diabetes, heart disease, and some cancers. It can also just keep your skin and teeth and everything healthy.